Development of a video-based slurry sensor for on-line ash analysis. Eighth quarterly technical progress report, July 1, 1996--September 30, 1996

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Automatic control of fine coal cleaning circuits has traditionally been limited by the lack of sensors for on-line ash analysis. Although several nuclear-based analyzers are available, none have seen widespread acceptance. This is largely due to the fact that nuclear sensors are expensive and tend to be influenced by changes in seam type and pyrite content. Recently, researchers at VPI&SU have developed an optical sensor for phosphate analysis. The sensor uses image processing technology to analyze video images of phosphate ore. It is currently being used by PCS Phosphate for off-fine analysis of dry flotation concentrate. The primary advantages of ... continued below

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14 p.

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Adel, G.T. & Luttrell, G.H. October 22, 1996.

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Description

Automatic control of fine coal cleaning circuits has traditionally been limited by the lack of sensors for on-line ash analysis. Although several nuclear-based analyzers are available, none have seen widespread acceptance. This is largely due to the fact that nuclear sensors are expensive and tend to be influenced by changes in seam type and pyrite content. Recently, researchers at VPI&SU have developed an optical sensor for phosphate analysis. The sensor uses image processing technology to analyze video images of phosphate ore. It is currently being used by PCS Phosphate for off-fine analysis of dry flotation concentrate. The primary advantages of optical sensors over nuclear sensors are that they are significantly cheaper, are not subject to measurement variations due to changes in high atomic number minerals, are inherently safer and require no special radiation permitting. The purpose of this work is to apply the knowledge gained in the development of an optical phosphate analyzer to the development of an on-fine ash analyzer for fine coal slurries. During the past quarter, installation of the video-based ash analyzer at the Middle Fork plant site was completed. A method of measuring and automatically adjusting for small variations in the sensor illumination scheme was developed and implemented. Initial on-line testing of the ash analyzer has yielded adequate calibration information, and the sensor is currently operating on-line. The on-line performance of the sensor is under review and the information from this review will be included in the final report.

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14 p.

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OSTI as DE97051064

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  • Other Information: PBD: 22 Oct 1996

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  • Other: DE97051064
  • Report No.: DOE/PC/94226--T5
  • Grant Number: FG22-94PC94226
  • DOI: 10.2172/421897 | External Link
  • Office of Scientific & Technical Information Report Number: 421897
  • Archival Resource Key: ark:/67531/metadc684141

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  • October 22, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 11, 2015, 12:50 p.m.

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Adel, G.T. & Luttrell, G.H. Development of a video-based slurry sensor for on-line ash analysis. Eighth quarterly technical progress report, July 1, 1996--September 30, 1996, report, October 22, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc684141/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.